| Subdistrict | Enum. district | # of links |
| Moore | 13 | 272 |
| Sarnia | 49 | 9 |
| Moore | 17 | 6 |
| Sarnia | 52 | 4 |
| Plympton | 24 | 4 |
| Sarnia | 29 | 3 |
| Sombra | 41 | 3 |
| Sarnia | 50 | 3 |
| Moore | 12 | 3 |
| Sarnia | 34 | 2 |
| Sarnia | 53 | 2 |
| Dutton | 39 | 2 |
| Townships 30 | 7 | 2 |
| Harwich | 9 | 1 |
| Glackmeyer | 43 | 1 |
| Moore | 19 | 1 |
| Sarnia | 30 | 1 |
| Dawn | 8 | 1 |